Detective Sergeant Frank Malloy and Sarah Brandt are not the only ones who have recently tied the knot. Family friend Mrs. O'Neill was delighted when her daughter, Una, wed the seemingly wealthy and charming Randolph Pollock. She didn't wonder why such an affluent man would want to marry a poor Irish girl, no matter how pretty she was. But now Mrs. O'Neill has a problem. Pollock's servants have found their employer bludgeoned to death, with Una cradling his body.

Frank and Sarah Malloy are enjoying married life and looking to make their family official by adopting Catherine, the child Sarah rescued and has been raising as her daughter. The newlyweds soon discover Parnell Vaughn, an actor and Catherine's legal father, is looking to fatten his pockets by insisting on a financial settlement to relinquish his parental rights. When Frank returns with money and finds Vaughn beaten to death, all evidence points to Frank as the culprit. Vaughn seems at first to be an unlikely candidate for murder, but Frank soon uncovers intrigue as dramatic as any that appears on stage. 

Victoria Thompson is the Edgar Award-nominated author of the Gaslight Mysteries and numerous historical romance novels. Set in 19th-century New York, Murder on Fifth Avenue follows midwife Sarah Brandt and Detective Sergeant Frank Malloy as they investigate the murder of a Knickerbocker club member.

Sarah Brandt is shattered when she learns that a woman has inquired at Hope’s Daughters Mission for Catherine, the abandoned child she has taken as her daughter. The woman claims she was Catherine’s nursemaid, now acting on behalf of the girl’s mother to reunite them. Unwilling to simply hand Catherine over to a complete stranger, Sarah asks Malloy to investigate. But when he goes to interview the woman at her tenement in Chelsea, he finds she has been murdered. Though her death leaves Sarah’s claim to Catherine unchallenged, her sense of justice compels her to work with Malloy to find the killer.

Abigail Northrup of Tarrytown, New York, was her parents' pride and joy. After graduating from a prestigious women's college in Morningside Heights, she took a job there as an instructor. She also joined the ranks of the New Women, ladies planning for a lives without husbands in which they make their own decisions and make a difference in the world. Unfortunately, her murder ended all that.

In this compelling Gaslight Mystery by Edgar Award-nominated author Victoria Thompson, a lady of means helps midwife Sarah Brandt rescue a young woman and her newborn from a brothel. But when the wealthy benefactor is found murdered, Sarah uncovers some unpleasant truths about the victim, her charity, and the woman and child Sarah risked her own life to save.

When the affluent Lintons of Lenox Hill summon Sarah Brandt to examine their teenage daughter, their worst fear is confirmed: she is with child. The pregnancy is a mystery, however, as the young woman - mentally still a child herself - is never left on her own and denies that any man has ever hurt her. It's a delicate situation, one which casts suspicion on those close to the Lintons, including their beloved minister, the Reverend Oliver Upchurch.

When an explosion kills wealthy industrialist Gregory Van Dyke, police commissioner Teddy Roosevelt presumes that anarchists are responsible and personally asks detective sergeant Frank Malloy to track them down. Malloy is up to the task, but he faces a different kind of challenge when he encounters Sarah Brandt paying a condolence call on the Van Dykes.

In the midst of Sarah and Frank's wedding preparations, Sarah accompanies her mother on a condolence call to the Upper West Side, where the son of family friends has died unexpectedly. The father believes his son was poisoned and would like Sarah and Frank to look into the matter. They soon learn that not everyone wants to know more about Charles' death, and they also discover that they are in the company of a very present danger.

When midwife Sarah Brandt visits Little Italy to check up on a new mother who delivered her baby just the day before, she finds the young woman dead. The family insists that the death was from complications of childbirth. Sarah disagrees. So does the woman's own mother, an Irishwoman who spreads the story that the girl was murdered by her Italian in-laws, the Ruoccos - an accusation that inflames tensions between the two immigrant groups.